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path: root/app/api/general-contracts/upload-pdf/route.ts
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/**
 * 일반계약 PDF 업로드 API
 * 클라이언트에서 생성된 PDF를 서버에 저장
 */

import { NextRequest, NextResponse } from 'next/server';
import { getServerSession } from 'next-auth/next';
import { authOptions } from '@/app/api/auth/[...nextauth]/route';
import { saveBuffer } from '@/lib/file-stroage';

export async function POST(request: NextRequest) {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return NextResponse.json(
        { success: false, error: '인증이 필요합니다' },
        { status: 401 }
      );
    }

    const formData = await request.formData();
    const file = formData.get('file') as File;
    const contractId = formData.get('contractId') as string;

    if (!file) {
      return NextResponse.json(
        { success: false, error: '파일이 제공되지 않았습니다' },
        { status: 400 }
      );
    }

    // 파일을 ArrayBuffer로 읽기
    const arrayBuffer = await file.arrayBuffer();
    const buffer = Buffer.from(arrayBuffer);

    // saveBuffer 함수를 사용해서 파일 저장
    const saveResult = await saveBuffer({
      buffer: buffer,
      fileName: `${Date.now()}_${file.name}`,
      directory: "generalContracts",
      originalName: file.name,
      userId: session.user.id
    });

    if (!saveResult.success) {
      return NextResponse.json(
        { success: false, error: saveResult.error || 'PDF 파일 저장에 실패했습니다.' },
        { status: 500 }
      );
    }

    const finalFilePath = saveResult.publicPath 
      ? saveResult.publicPath.replace('/api/files/', '') 
      : `/generalContracts/${saveResult.fileName}`;

    return NextResponse.json({
      success: true,
      filePath: finalFilePath,
      fileName: saveResult.fileName,
      publicPath: saveResult.publicPath,
    });
  } catch (error) {
    console.error('PDF 업로드 오류:', error);
    return NextResponse.json(
      { 
        success: false, 
        error: error instanceof Error ? error.message : 'PDF 업로드 중 오류가 발생했습니다.' 
      },
      { status: 500 }
    );
  }
}